/*
 * Copyright (C) 2007 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.android.dx.cf.iface;

import com.android.dx.cf.attrib.AttConstantValue;
import com.android.dx.rop.cst.CstNat;
import com.android.dx.rop.cst.CstType;
import com.android.dx.rop.cst.TypedConstant;

/**
 * Standard implementation of {@link Field}, which directly stores all the
 * associated data.
 */
public final class StdField extends StdMember implements Field {

	/**
	 * Constructs an instance.
	 * 
	 * @param definingClass
	 *            {@code non-null;} the defining class
	 * @param accessFlags
	 *            access flags
	 * @param nat
	 *            {@code non-null;} member name and type (descriptor)
	 * @param attributes
	 *            {@code non-null;} list of associated attributes
	 */
	public StdField(CstType definingClass, int accessFlags, CstNat nat,
			AttributeList attributes) {
		super(definingClass, accessFlags, nat, attributes);
	}

	/** {@inheritDoc} */
	public TypedConstant getConstantValue() {
		AttributeList attribs = getAttributes();
		AttConstantValue cval = (AttConstantValue) attribs
				.findFirst(AttConstantValue.ATTRIBUTE_NAME);

		if (cval == null) {
			return null;
		}

		return cval.getConstantValue();
	}
}
